Evaluation of chlorophyll fluorescence and membrane injury in the leaves of barley cultivars under osmotic stress

Kocheva, Konstantina; Lambrev, Petar H.; Георгиев, Георги Николов; Goltsev, V.; Karabaliev, Miroslav

doi:10.1016/j.bioelechem.2003.09.020

Cited by 91 publications

(49 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results indicate that electron transport activity and the photosynthetic apparatus of linseed seedlings with certain drought-resistance are damaged. The results as previously reported, however, compare as other crops, linseed seedlings have more adaptive ability to drought environment by adjustment of itself (Cornic & Fresneau 2002;Kocheva et al, 2004;Zhou et al, 2007).…”

Section: Effects Of Water Stress On Chlorophyll Fluorescence Chloropsupporting

confidence: 77%

Effects of Water Stress on Germination and Growth of Linseed Seedlings (Linum usitatissimum L), Photosynthetic Efficiency and Accumulation of Metabolites

Guo¹,

Hao²,

Gong³

2012

JAS

View full text Add to dashboard Cite

Drought is a serious problem in many nations, adversely affecting both crop growth and yield. Here, we investigate the effects of water stress on growth, photosynthesis, physiology and germination in seedlings of linseed (Linum usitatissimum L). Water stress was imposed by exposing the sand-grown roots to irrigation with a range of concentrations of polyethylene glycol-6000 (PEG). Both relative growth rate (RGR) and water content (WC) decreased with increasing PEG concentration with the reductions being greatest for 20% PEG (water potential -0.58 MPa). The results show that as PEG concentration increased, the fluorescent chlorophyll and chloroplast pigments decreased but the ratio of Chl a/Chl b gradually increased. Meanwhile, shoot carbohydrate content increased slightly with increasing PEG concentration while that in the roots peaked at 5% PEG (-0.09 MPa) before decreasing at higher PEG concentrations. The content of proline in shoots and roots increased with increasing PEG concentration. With increasing PEG concentration, betaine showed a slight tendency to rise in the root, but to rise and then fall in the shoot. The results indicate that PEG-induced water stress increased the accumulations of carbohydrate, proline and betaine. These may help the linseed seedlings to survive periods of osmotic stress induced by drought and may be involved in the perception and transmission a drought signal, also playing a role in osmotic adjustment. Under water stress, the main inorganic ions involved in osmotic adjustment were K + , Na + , Ca 2+ and Cl -likely thereby increasing drought resistance. The germination percentage of the seeds was severely reduced by increasing PEG concentrations, ceasing altogether at 15% PEG. Many of the seeds that remained dormant in the higher PEG concentrations germinated satisfactorily when afterwards placed in pure water. The research provides useful leads in the planned development of linseed cultivars having increased drought tolerance.

show abstract

Section: Effects Of Water Stress On Chlorophyll Fluorescence Chloropsupporting

confidence: 77%

Effects of Water Stress on Germination and Growth of Linseed Seedlings (Linum usitatissimum L), Photosynthetic Efficiency and Accumulation of Metabolites

Guo¹,

Hao²,

Gong³

2012

JAS

View full text Add to dashboard Cite

show abstract

“…It is generally accepted that the maintenance of integrity and stability of membranes under water stress is a major component of drought tolerance in plants (Bajji et al, 2002). The degree of cell membrane stability is considered to be one of the best physiological indicators of drought stress tolerance and can be used to screening drought-tolerant genotypes (Kocheva et al, 2004). One of the most important changes under stress is the decrease in the total chlorophyll content (Sarker et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Effect of drought stress on bio-chemical change and cell membrane stability of soybean genotypes

Chowdhury

Karim

Khaliq

et al. 2017

Bangladesh J. Agric. Res

View full text Add to dashboard Cite

An experiment was conducted in a venylhouse at the environmental stress site of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during September to December 2012 to study the effect of drought stress on proline content, soluble sugar content, chlorophyll content and cell membrane stability of soybean genotypes. Four studied genotypes viz., Shohag, BARI Soybean-6 and BD2331 (relatively stress tolerant) and BGM2026 (susceptible) were tested against two water regimes such as water stress and non-stress. Results indicated that due to drought stress there was an increase in proline content and soluble sugar content and decrease in chlorophyll a content, chlorophyll b content, total chlorophyll content, chlorophyll a/b ratio and cell membrane stability. Proline and soluble sugar showed more content in tolerant genotype than in susceptible ones. Chlorophyll reduction was most significant and cell membrane stability was found minimal in susceptible genotypes. From the result, genotype BGM2026 which recorded the lowest proline, soluble sugar content and highest chlorophyll reduction and cell membrane injury was considered as drought susceptible. The variety/genotype of soybean such as BARI Soybean-6, Shohag and BD2331 were more drought stress tolerant and better mechanisms of drought tolerance.

show abstract

“…The unaffected F v /F m values indicate the absence of photo-damage to PSII reaction centres and confirm that the photochemical efficiency of PSII system is resistant to water deficit (Lawlor 2002;Kocheva et al 2004) and to Al toxicity (Akaya, Takenaka 2001;Chen et al 2005).…”

Section: Discussionmentioning

confidence: 96%

Drought and aluminium as stress factors in Norway spruce (Picea abies) seedlings

Slugeňová¹,

Ditmarová²,

Kurjak³

et al. 2011

J. For. Sci.

View full text Add to dashboard Cite

Effects of drought, Al and their possible interaction on physiological characteristics were studied in four-years-old Norway spruce seedlings in a pot experiment. Drought stress was imposed by withholding irrigation. Al was applied to the soil as an AlCl 3 solution at a concentration of 1,500 μmol·l -1 . Water deficit caused a decrease in needle water potential, net photosynthetic rate (P n ) and an increase in proline accumulation. On the other hand, water potential, P n and proline concentration in seedlings subjected to Al remained unchanged. During the experiment, no significant variation was registered in the chlorophyll a fluorescence parameters. Chlorophyll content was significantly reduced in the Al presence. Drought led to a lower Al accumulation in needles in comparison with well-watered seedlings. Progressive dehydration influenced the physiological state of spruce seedlings. The presence of Al in soil did not cause any negative changes in the physiological parameters under an optimal water regime. By contrast, the synergic effect of drought and Al induced the most marked changes in measured characteristics, which may indicate a possible enhanced impact of drought and Al interaction in comparison with the single effect of these stress factors.

show abstract

Evaluation of chlorophyll fluorescence and membrane injury in the leaves of barley cultivars under osmotic stress

Cited by 91 publications

References 16 publications

Effects of Water Stress on Germination and Growth of Linseed Seedlings (Linum usitatissimum L), Photosynthetic Efficiency and Accumulation of Metabolites

Effects of Water Stress on Germination and Growth of Linseed Seedlings (Linum usitatissimum L), Photosynthetic Efficiency and Accumulation of Metabolites

Effect of drought stress on bio-chemical change and cell membrane stability of soybean genotypes

Drought and aluminium as stress factors in Norway spruce (Picea abies) seedlings

Contact Info

Product

Resources

About